u-shaped valleys provide evidence of which processes?(1 point)
A. coastal erosion.
B. glacial erosion.
C. deposition.
D. wind erosion.
B. glacial erosion.
A. erosion.
C. sea arches.
C. sea stack.
what is the process of weathering rocks down into smaller pieces and then taking them away called?(1 point)
A. erosion.
B. weathering.
C. condensation.
D. deposition.
which land form is evidence of erosion by waves on rocky coasts?(1 point)
A. sand dunes.
B. u-shaped valleys.
C. sea arches.
D. shallow ponds.
what is the name of the land form remaining after a sea arch collapses?(1 point) A. sea cliff. B. hoodoo. C. sea stack. D. canyon
the last questions answer was sand dune
The correct answer is B. glacial erosion.
To arrive at this answer, we can follow a few steps:
1. Understand what a U-shaped valley is: A U-shaped valley is a type of landform that is carved out by a glacier. It is characterized by steep, straight sides and a wide, flat bottom.
2. Consider the processes that can create this landform:
- Coastal erosion (option A) refers to the wearing away of coastal land by the action of waves and currents. It typically creates features like cliffs, sea caves, and arches, but not U-shaped valleys.
- Deposition (option C) is the process of sediment being dropped or deposited by wind, water, or ice. While it can create various landforms, it does not produce U-shaped valleys.
- Wind erosion (option D) occurs when wind carries and deposits sediment. However, it is not responsible for shaping U-shaped valleys.
3. Focus on glacial erosion (option B): Glacial erosion is caused by moving glaciers that scrape and carve away the land underneath them. As glaciers flow downhill, they have immense power to pluck and erode rocks, creating U-shaped valleys. This process involves the combined forces of abrasion (rock-on-rock scraping) and plucking (the dragging away of loosened rock material).
Based on this analysis, the correct answer is B. glacial erosion, as U-shaped valleys are a well-known result of this process.